Fuji RCH924 IGBT driver mixed‑integration circuit manual with features, specifications, wiring guidelines and application examples.
The Fuji RCH924 is a mixed‑integration IGBT driver circuit designed for high‑efficiency motor drives, UPS, inverters and welding equipment. It offers single‑supply operation, built‑in over‑current protection, high isolation voltage and compact SIL packaging.
The manual provides an overview of the device, detailed specifications, functional block diagram, recommended wiring practices, application circuit examples for both mid‑speed (≤10 kHz) and high‑speed (≈40 kHz) operation, and safety precautions. This manual is written in Chinese.
| Supply voltage (Vcc) | 25 V |
|---|---|
| Input current (lin) | 25 mA |
| Isolation voltage (Viso) | 2500 V AC (1 min) |
| Recommended supply voltage range | 20 V ±10 % |
The recommended supply voltage is 20 V with a tolerance of +10 % and 0 % lower.
The EXB850 can drive up to 150 A for a 600 V IGBT and up to 75 A for a 1200 V IGBT.
The input‑output isolation voltage is rated at 2500 V AC for 1 minute.
Keep the wiring length between the driver and the IGBT under 1 meter.